Porgy Key is a small island north of the upper Florida Keys in Biscayne National Park. It is in Miami-Dade County, Florida. It is located in southern Biscayne Bay, just north of Old Rhodes Key and Totten Key, just southeast of the southern tip of Elliott Key, and in between Old Rhodes and Reid Keys. It is on the south side of Caesar Creek, the creek that separates Elliott and Old Rhodes Keys.